Briefcase



FIG. 1 is a perspective view of an embodiment of the briefcase.

FIG. 2 is front view of the briefcase of FIG. 1.

FIG. 3 is a rear view of the briefcase of FIG. 1.

FIG. 4 is left side view of the briefcase of FIG. 1.

FIG. 5 is right side view of the briefcase of FIG. 1.

FIG. 6 is a top view of the briefcase of FIG. 1; and,

FIG. 7 is a bottom view of the briefcase of FIG. 1.

The broken lines on the strap and logo patch indicate stitching and are part of the claimed design. All other broken lines in the figures are illustrative of environment and form no part of the claimed design. 

The ornamental design for a briefcase, as shown and described. 